content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import static org.junit.Assert.*;
  
  import java.util.*;
  import java.util.concurrent.Callable;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.junit.*;
  import org.reactivestreams.*;
  
  import hu.akarnokd.reactivestreams.extensions.*;
  import io.reactivex.common.exceptions.*;
  import io.reactivex.common.functions.*;
  import io.reactivex.common.internal.functions.Functions;
  import io.reactivex.common.internal.utils.ExceptionHelper;
  import io.reactivex.flowable.*;
  import io.reactivex.flowable.internal.subscriptions.BooleanSubscription;
  import io.reactivex.flowable.processors.PublishProcessor;
  import io.reactivex.flowable.subscribers.*;
  
  public class FlowableFlattenIterableTest {
  
      @Test
      public void normal0() {
  
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.range(1, 2)
          .reduce(new BiFunction<Integer, Integer, Integer>() {
              @Override
              public Integer apply(Integer a, Integer b) {
                  return Math.max(a, b);
              }
          })
  
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return Arrays.asList(v, v + 1);
              }
          })
          .subscribe(ts);
  
          ts.assertValues(2, 3)
          .assertNoErrors()
          .assertComplete();
      }
  
      final Function<Integer, Iterable<Integer>> mapper = new Function<Integer, Iterable<Integer>>() {
          @Override
          public Iterable<Integer> apply(Integer v) {
              return Arrays.asList(v, v + 1);
          }
      };
  
      @Test
      public void normal() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.range(1, 5).concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertValues(1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void normalViaFlatMap() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.range(1, 5).flatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertValues(1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void normalBackpressured() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>(0);
  
          Flowable.range(1, 5).concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertNoValues();
          ts.assertNoErrors();
          ts.assertNotComplete();
  
          ts.request(1);
  
          ts.assertValue(1);
          ts.assertNoErrors();
          ts.assertNotComplete();
  
          ts.request(2);
  
          ts.assertValues(1, 2, 2);
          ts.assertNoErrors();
          ts.assertNotComplete();
  
          ts.request(7);
  
          ts.assertValues(1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void longRunning() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          int n = 1000 * 1000;
  
          Flowable.range(1, n).concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertValueCount(n * 2);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void asIntermediate() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          int n = 1000 * 1000;
  
          Flowable.range(1, n).concatMapIterable(mapper).concatMap(new Function<Integer, Flowable<Integer>>() {
              @Override
              public Flowable<Integer> apply(Integer v) {
                  return Flowable.just(v);
              }
          })
          .subscribe(ts);
  
          ts.assertValueCount(n * 2);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void just() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.just(1).concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertValues(1, 2);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void justHidden() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.just(1).hide().concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertValues(1, 2);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void empty() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.<Integer>empty().concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertNoValues();
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void error() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.<Integer>just(1).concatWith(Flowable.<Integer>error(new TestException()))
          .concatMapIterable(mapper)
          .subscribe(ts);
  
          ts.assertValues(1, 2);
          ts.assertError(TestException.class);
          ts.assertNotComplete();
      }
  
      @Test
      public void iteratorHasNextThrowsImmediately() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          final Iterable<Integer> it = new Iterable<Integer>() {
              @Override
              public Iterator<Integer> iterator() {
                  return new Iterator<Integer>() {
                      @Override
                      public boolean hasNext() {
                          throw new TestException();
                      }
  
                      @Override
                      public Integer next() {
                          return 1;
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          };
  
          Flowable.range(1, 2)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return it;
              }
          })
          .subscribe(ts);
  
          ts.assertNoValues();
          ts.assertError(TestException.class);
          ts.assertNotComplete();
      }
  
      @Test
      public void iteratorHasNextThrowsImmediatelyJust() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          final Iterable<Integer> it = new Iterable<Integer>() {
              @Override
              public Iterator<Integer> iterator() {
                  return new Iterator<Integer>() {
                      @Override
                      public boolean hasNext() {
                          throw new TestException();
                      }
  
                      @Override
                      public Integer next() {
                          return 1;
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          };
  
          Flowable.just(1)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return it;
              }
          })
          .subscribe(ts);
  
          ts.assertNoValues();
          ts.assertError(TestException.class);
          ts.assertNotComplete();
      }
  
      @Test
      public void iteratorHasNextThrowsSecondCall() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          final Iterable<Integer> it = new Iterable<Integer>() {
              @Override
              public Iterator<Integer> iterator() {
                  return new Iterator<Integer>() {
                      int count;
                      @Override
                      public boolean hasNext() {
                          if (++count >= 2) {
                              throw new TestException();
                          }
                          return true;
                      }
  
                      @Override
                      public Integer next() {
                          return 1;
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          };
  
          Flowable.range(1, 2)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return it;
              }
          })
          .subscribe(ts);
  
          ts.assertValue(1);
          ts.assertError(TestException.class);
          ts.assertNotComplete();
      }
  
      @Test
      public void iteratorNextThrows() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          final Iterable<Integer> it = new Iterable<Integer>() {
              @Override
              public Iterator<Integer> iterator() {
                  return new Iterator<Integer>() {
                      @Override
                      public boolean hasNext() {
                          return true;
                      }
  
                      @Override
                      public Integer next() {
                          throw new TestException();
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          };
  
          Flowable.range(1, 2)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return it;
              }
          })
          .subscribe(ts);
  
          ts.assertNoValues();
          ts.assertError(TestException.class);
          ts.assertNotComplete();
      }
  
      @Test
      public void iteratorNextThrowsAndUnsubscribes() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          final Iterable<Integer> it = new Iterable<Integer>() {
              @Override
              public Iterator<Integer> iterator() {
                  return new Iterator<Integer>() {
                      @Override
                      public boolean hasNext() {
                          return true;
                      }
  
                      @Override
                      public Integer next() {
                          throw new TestException();
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          };
  
          PublishProcessor<Integer> ps = PublishProcessor.create();
  
          ps
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return it;
              }
          })
          .subscribe(ts);
  
          ps.onNext(1);
  
          ts.assertNoValues();
          ts.assertError(TestException.class);
          ts.assertNotComplete();
  
          Assert.assertFalse("PublishProcessor has Subscribers?!", ps.hasSubscribers());
      }
  
      @Test
      public void mixture() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.range(0, 1000)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return (v % 2) == 0 ? Collections.singleton(1) : Collections.<Integer>emptySet();
              }
          })
          .subscribe(ts);
  
          ts.assertValueCount(500);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void emptyInnerThenSingleBackpressured() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>(1);
  
          Flowable.range(1, 2)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return v == 2 ? Collections.singleton(1) : Collections.<Integer>emptySet();
              }
          })
          .subscribe(ts);
  
          ts.assertValue(1);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void manyEmptyInnerThenSingleBackpressured() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>(1);
  
          Flowable.range(1, 1000)
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return v == 1000 ? Collections.singleton(1) : Collections.<Integer>emptySet();
              }
          })
          .subscribe(ts);
  
          ts.assertValue(1);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void hasNextIsNotCalledAfterChildUnsubscribedOnNext() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          final AtomicInteger counter = new AtomicInteger();
  
          final Iterable<Integer> it = new Iterable<Integer>() {
              @Override
              public Iterator<Integer> iterator() {
                  return new Iterator<Integer>() {
                      @Override
                      public boolean hasNext() {
                          counter.getAndIncrement();
                          return true;
                      }
  
                      @Override
                      public Integer next() {
                          return 1;
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          };
  
          PublishProcessor<Integer> ps = PublishProcessor.create();
  
          ps
          .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return it;
              }
          })
          .take(1)
          .subscribe(ts);
  
          ps.onNext(1);
  
          ts.assertValue(1);
          ts.assertNoErrors();
          ts.assertComplete();
  
          Assert.assertFalse("PublishProcessor has Subscribers?!", ps.hasSubscribers());
          Assert.assertEquals(1, counter.get());
      }
  
      @Test
      public void normalPrefetchViaFlatMap() {
          TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.range(1, 5).flatMapIterable(mapper, 2)
          .subscribe(ts);
  
          ts.assertValues(1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void withResultSelectorMaxConcurrent() {
          TestSubscriber<Integer> ts = TestSubscriber.create();
  
          Flowable.range(1, 5)
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) {
                  return Collections.singletonList(1);
              }
          }, new BiFunction<Integer, Integer, Integer>() {
              @Override
              public Integer apply(Integer a, Integer b) {
                  return a * 10 + b;
              }
          }, 2)
          .subscribe(ts)
          ;
  
          ts.assertValues(11, 21, 31, 41, 51);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void flatMapIterablePrefetch() {
          Flowable.just(1, 2)
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer t) throws Exception {
                  return Arrays.asList(t * 10);
              }
          }, 1)
          .test()
          .assertResult(10, 20);
      }
  
      @Test
      public void dispose() {
          TestHelper.checkDisposed(PublishProcessor.create().flatMapIterable(new Function<Object, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Object v) throws Exception {
                  return Arrays.asList(10, 20);
              }
          }));
      }
  
      @Test
      public void badSource() {
          TestHelper.checkBadSourceFlowable(new Function<Flowable<Integer>, Object>() {
              @Override
              public Object apply(Flowable<Integer> o) throws Exception {
                  return o.flatMapIterable(new Function<Object, Iterable<Integer>>() {
                      @Override
                      public Iterable<Integer> apply(Object v) throws Exception {
                          return Arrays.asList(10, 20);
                      }
                  });
              }
          }, false, 1, 1, 10, 20);
      }
  
      @Test
      public void callableThrows() {
          Flowable.fromCallable(new Callable<Object>() {
              @Override
              public Object call() throws Exception {
                  throw new TestException();
              }
          })
          .flatMapIterable(Functions.justFunction(Arrays.asList(1, 2, 3)))
          .test()
          .assertFailure(TestException.class);
      }
  
      @Test
      public void fusionMethods() {
          Flowable.just(1, 2)
          .flatMapIterable(Functions.justFunction(Arrays.asList(1, 2, 3)))
          .subscribe(new RelaxedSubscriber<Integer>() {
              @Override
              public void onSubscribe(Subscription s) {
                  @SuppressWarnings("unchecked")
                  FusedQueueSubscription<Integer> qs = (FusedQueueSubscription<Integer>)s;
  
                  assertEquals(FusedQueueSubscription.SYNC, qs.requestFusion(FusedQueueSubscription.ANY));
  
                  try {
                      assertFalse("Source reports being empty!", qs.isEmpty());
  
                      assertEquals(1, qs.poll().intValue());
  
                      assertFalse("Source reports being empty!", qs.isEmpty());
  
                      assertEquals(2, qs.poll().intValue());
  
                      assertFalse("Source reports being empty!", qs.isEmpty());
  
                      qs.clear();
  
                      assertTrue("Source reports not empty!", qs.isEmpty());
  
                      assertNull(qs.poll());
                  } catch (Throwable ex) {
                      throw ExceptionHelper.wrapOrThrow(ex);
                  }
              }
  
              @Override
              public void onNext(Integer t) {
              }
  
              @Override
              public void onError(Throwable t) {
              }
  
              @Override
              public void onComplete() {
              }
          });
      }
  
      @Test
      public void smallPrefetch() {
          Flowable.just(1, 2, 3)
          .flatMapIterable(Functions.justFunction(Arrays.asList(1, 2, 3)), 1)
          .test()
          .assertResult(1, 2, 3, 1, 2, 3, 1, 2, 3);
      }
  
      @Test
      public void smallPrefetch2() {
          Flowable.just(1, 2, 3).hide()
          .flatMapIterable(Functions.justFunction(Collections.emptyList()), 1)
          .test()
          .assertResult();
      }
  
      @Test
      public void mixedInnerSource() {
          TestSubscriber<Integer> ts = SubscriberFusion.newTest(FusedQueueSubscription.ANY);
  
          Flowable.just(1, 2, 3)
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) throws Exception {
                  if ((v & 1) == 0) {
                      return Collections.emptyList();
                  }
                  return Arrays.asList(1, 2);
              }
          })
          .subscribe(ts);
  
          SubscriberFusion.assertFusion(ts, FusedQueueSubscription.SYNC)
          .assertResult(1, 2, 1, 2);
      }
  
      @Test
      public void mixedInnerSource2() {
          TestSubscriber<Integer> ts = SubscriberFusion.newTest(FusedQueueSubscription.ANY);
  
          Flowable.just(1, 2, 3)
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) throws Exception {
                  if ((v & 1) == 1) {
                      return Collections.emptyList();
                  }
                  return Arrays.asList(1, 2);
              }
          })
          .subscribe(ts);
  
          SubscriberFusion.assertFusion(ts, FusedQueueSubscription.SYNC)
          .assertResult(1, 2);
      }
  
      @Test
      public void fusionRejected() {
          TestSubscriber<Integer> ts = SubscriberFusion.newTest(FusedQueueSubscription.ANY);
  
          Flowable.just(1, 2, 3).hide()
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) throws Exception {
                  return Arrays.asList(1, 2);
              }
          })
          .subscribe(ts);
  
          SubscriberFusion.assertFusion(ts, FusedQueueSubscription.NONE)
          .assertResult(1, 2, 1, 2, 1, 2);
      }
  
      @Test
      public void fusedIsEmptyWithEmptySource() {
          Flowable.just(1, 2, 3)
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) throws Exception {
                  if ((v & 1) == 0) {
                      return Collections.emptyList();
                  }
                  return Arrays.asList(v);
              }
          })
          .subscribe(new RelaxedSubscriber<Integer>() {
              @Override
              public void onSubscribe(Subscription s) {
                  @SuppressWarnings("unchecked")
                  FusedQueueSubscription<Integer> qs = (FusedQueueSubscription<Integer>)s;
  
                  assertEquals(FusedQueueSubscription.SYNC, qs.requestFusion(FusedQueueSubscription.ANY));
  
                  try {
                      assertFalse("Source reports being empty!", qs.isEmpty());
  
                      assertEquals(1, qs.poll().intValue());
  
                      assertFalse("Source reports being empty!", qs.isEmpty());
  
                      assertEquals(3, qs.poll().intValue());
  
                      assertTrue("Source reports being non-empty!", qs.isEmpty());
                  } catch (Throwable ex) {
                      throw ExceptionHelper.wrapOrThrow(ex);
                  }
              }
  
              @Override
              public void onNext(Integer t) {
              }
  
              @Override
              public void onError(Throwable t) {
              }
  
              @Override
              public void onComplete() {
              }
          });
      }
  
      @Test
      public void fusedSourceCrash() {
          Flowable.range(1, 3)
          .map(new Function<Integer, Object>() {
              @Override
              public Object apply(Integer v) throws Exception {
                  throw new TestException();
              }
          })
          .flatMapIterable(Functions.justFunction(Collections.emptyList()), 1)
          .test()
          .assertFailure(TestException.class);
      }
  
      @Test
      public void take() {
          Flowable.range(1, 3)
          .flatMapIterable(Functions.justFunction(Arrays.asList(1)), 1)
          .take(1)
          .test()
          .assertResult(1);
      }
  
      @Test
      public void overflowSource() {
          new Flowable<Integer>() {
              @Override
              protected void subscribeActual(Subscriber<? super Integer> s) {
                  s.onSubscribe(new BooleanSubscription());
                  s.onNext(1);
                  s.onNext(2);
                  s.onNext(3);
              }
          }
          .flatMapIterable(Functions.justFunction(Arrays.asList(1)), 1)
          .test(0L)
          .assertFailure(MissingBackpressureException.class);
      }
  
      @Test
      public void oneByOne() {
          Flowable.range(1, 3).hide()
          .flatMapIterable(Functions.justFunction(Arrays.asList(1)), 1)
          .rebatchRequests(1)
          .test()
          .assertResult(1, 1, 1);
      }
  
      @Test
      public void cancelAfterHasNext() {
          final TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  
          Flowable.range(1, 3).hide()
          .flatMapIterable(new Function<Integer, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Integer v) throws Exception {
                  return new Iterable<Integer>() {
                      int count;
                      @Override
                      public Iterator<Integer> iterator() {
                          return new Iterator<Integer>() {
  
                              @Override
                              public boolean hasNext() {
                                  if (++count == 2) {
                                      ts.cancel();
                                      ts.onComplete();
                                  }
                                  return true;
                              }
  
                              @Override
                              public Integer next() {
                                  return 1;
                              }
  
                              @Override
                              public void remove() {
                                  throw new UnsupportedOperationException();
                              }
                          };
                      }
                  };
              }
          })
          .subscribe(ts);
  
          ts.assertResult(1);
      }
  
      @Test
      public void doubleShare() {
          Iterable<Integer> it = Flowable.range(1, 300).blockingIterable();
              Flowable.just(it, it)
              .flatMapIterable(Functions.<Iterable<Integer>>identity())
              .share()
              .share()
              .count()
              .test()
              .assertResult(600L);
      }
  
      @Test
      public void multiShare() {
          Iterable<Integer> it = Flowable.range(1, 300).blockingIterable();
          for (int i = 0; i < 5; i++) {
              Flowable<Integer> f = Flowable.just(it, it)
              .flatMapIterable(Functions.<Iterable<Integer>>identity());
  
              for (int j = 0; j < i; j++) {
                  f = f.share();
              }
  
              f
              .count()
              .test()
              .withTag("Share: " + i)
              .assertResult(600L);
          }
      }
  
      @Test
      public void multiShareHidden() {
          Iterable<Integer> it = Flowable.range(1, 300).blockingIterable();
          for (int i = 0; i < 5; i++) {
              Flowable<Integer> f = Flowable.just(it, it)
              .flatMapIterable(Functions.<Iterable<Integer>>identity())
              .hide();
  
              for (int j = 0; j < i; j++) {
                  f = f.share();
              }
  
              f
              .count()
              .test()
              .withTag("Share: " + i)
              .assertResult(600L);
          }
      }
  }
  